For some reason it's not even on the Eureka website yet, you can normally pre-order from there.

The pre-orders aren't done at their "regular" website (I believe they don't sell anything from there), but through a special link given to mailing list subscribers (I posted the last few on this forum). The last one was sent at the end of August: http://www.eurekavideo.co.uk/offers/augustoffers.html

They are yet to open pre-orders for their October titles (which should happen this week, based on past emails, which were sent at the end of the previous month), so they will probably only start accepting pre-orders for November titles next month.